ETSI EN 300 392-3-4
ETSI EN 300 392-3-4
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 4: Additional Network Feature Short Data Service (ANF-ISISDS)
standard published 11/01/2000 by European Telecommunications Standards Institute
